152 PROCEEDINGS OF THE CALIFORNIA 



shaped, the last whorl nearly inclosing the rest ; spire sunken, mouth vertically 

 crescent-shaped, lip a little thickened within ; umbilicus like depressed spire. 



22 A. Yatesii Cp. Wh. 6)4, yellowish, corneous translucent, bowl-shaped 

 spire one-third the width of shell ; last whorl much defljxed and expanding 

 near mouth, umbilicus showing 5i.< whorls ; diam. 0.31. alt. 0.14. 



Cave at Cave City, Calaveras Co., Dr. Stivers and Mr. Holder, Dr. L. G. 

 Yates and others. The first-named gentlemen lost the credit of this interesting 

 discovery, by keeping their unique, but perfect specimen hid from conchologists 

 for several years. 



Vai.lonia Risso. Form like Patula, but with a white, thickened, reflected 

 peristome, nearly circular and spreading. 



23 V. MiNUTA Say. Wh. 4, whitish, smooth, or ribbed, nearly flat, umbili- 

 cus wide ; diam. 0.12, alt. 0.0.5. 



This American form of the Old World p u 1 c h e 1 1 a 31iVl. has only lately 

 been found west of the Rocky Mountains. I obtained an immature specimen near 

 Truckee in May, which I referred doubtfully to P. Whitneiji as a pale variety. 

 Mr. Harford afterwards found it common near Donner Lake, a few miles above 

 Truckee, and Mr. Hemphill has also found them common near White Pine 

 Mountains. Not having been found north of Canada, itscircumpolar distribu- 

 tion, though asserted by Middendorf, is doubtful, he, like most authors, con- 

 sidering it identical with pidcliella. 



24Lysinoe Carpenter! Newc. (Cp.) This species, described in 

 the Proceedings, Vol.11., p. 103, from specimens collected by Col. C. D. 

 Gibbes, in Tulare Valley, has been since overlooked or confounded with others, 

 until Dr. Newcomb identified it with specimens collected by Mr. Gabb in 

 Lower California, and referred by him to Remondii Tryon, a distinct Guaymas 

 species. Mr. Gabb's specimens compared with the type in our cabinet agree 

 very closely, and also with a specimen found by me at San Dirgo, but referred 

 by Dr. Newcomb as variety to rufocinda Newc. Mr. Hemphill has found others 

 at the Coronados Is., near San Diego, and some bleached ones from near Fort 

 Tejon seem the same. It differs from Traskii Newc, previously described, in a 

 a very slight degree, and may prove identical. 



It was first described from flided specimens, which fact, together with a 

 wrongly-named fossil specimen (undescribed) in the State Museum. led me to 

 place it in the wrong section in my synopsis. 



L. R we 1 1 i i Newc. is the flattened companion of this, like those similarly 

 connected with Group XIIL, but separated in my synopsis as Group XIV. 



25 Arionta Kelletii Fbs. Specimens from the Coronados Is., {Hemp- 

 hill) pass into the variety Stearnsiana Gabb, from Lower California. 

 Others from east of San Diego are very similar to the form called red i m i t a, 

 by W. G. Binney, from Clemeute Is., which is a smooth form of ere br is- 

 tr ia t a Newc* 



* The specimpn found by Mr. Holder at Alameda, "on the shore," before referred to 

 redimita as an extreme variety, with only 4^ whorls and a form like pomatia, proves to be a 

 faded specimen of Buffoniana Pf (Ilumboldiiana var ?), doubtless imported from 

 Mexico. Ends of four bands are still faintly visible. 



D.s;dalocheila Beck. — Shell flattened, many whorled, peristome simple or 

 curiously twisted and contracted, two or three-toothed, and a tooth on the 

 columella. 



26 D. Harfordiana Cp. (Amer. Jour, of Conch., V., p. 196, 1870.) Wh. 6, 

 flat, the last a liitle deflexed, umbil. wide, showing .5 whorls ; per" -ome thick- 

 ened, with 2 inflected teeth, its margins joined by a thick callus, and a strong, 

 triangular, parietal tooth placed nearly horizontal ; diam. 0.40 ; alt. 0.16. 



Found by Harford & Dunn at the Big Trees of Fresno Co., 6,500 feet alt. 



